An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates

IVPP-IR > 中科院古脊椎所（2000年以后）

	An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates
	Zhu, Min 1; Yu, Xiaobo 1,2; Choo, Brian 1; Wang, Junqing 1; Jia, Liantao 1; [email protected]
	2012-06-23
发表期刊	BIOLOGY LETTERS
ISSN	1744-9561
卷号	8 期号:3 页码:453-456
文章类型	Article
摘要	Almost all gnathostomes or jawed vertebrates (including osteichthyans, chondrichthyans, 'acanthodians' and most placoderms) possess paired pectoral and pelvic fins. To date, it has generally been believed that antiarch placoderms (extinct armoured jawed fishes from the Silurian-Devonian periods) lacked pelvic fins. The putative absence of pelvic fins is a key character bearing on the monophyly or paraphyly of placoderms. It also has far-reaching implications for studying the sequence of origin of pelvic girdles versus that of movable jaws in the course of vertebrate evolution. Parayunnanolepis xitunensis represents the only example of a primitive antiarch with extensive post-thoracic preservation, and its original description has been cited as confirming the primitive lack of pelvic fins in early antiarchs. Here, we present a revised description of Parayunnanolepis and offer the first unambiguous evidence for the presence of pelvic girdles in antiarchs. As antiarchs are placed at the base of the gnathostome radiation in several recent studies, our finding shows that all jawed vertebrates (including antiarch placoderms) primitively possess both pectoral and pelvic fins and that the pelvic fins did not arise within gnathostomes at a point subsequent to the origin of jaws.
关键词	Pelvic Girdles Placoderms Antiarchs Jawed Vertebrates Devonian
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
URL	查看原文
关键词[WOS]	PAIRED FINS ; BRAINCASE ; EVOLUTION ; FISHES
收录类别	SCI
语种	英语
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000303933300038
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4283
专题	中科院古脊椎所（2000年以后）
通讯作者	[email protected]
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 2.Kean Univ, Dept Biol Sci, Union, NJ 07083 USA
推荐引用方式 GB/T 7714	Zhu, Min,Yu, Xiaobo,Choo, Brian,et al. An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates[J]. BIOLOGY LETTERS,2012,8(3):453-456.
APA	Zhu, Min,Yu, Xiaobo,Choo, Brian,Wang, Junqing,Jia, Liantao,[email protected].(2012).An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates.BIOLOGY LETTERS,8(3),453-456.
MLA	Zhu, Min,et al."An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates".BIOLOGY LETTERS 8.3(2012):453-456.

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